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Figure 7: Access to the right upper pulmonary vein is obtained retrograde (a) from an arterial catheter passed from the aorta through the left ventricle and left atrium. It can be obtained antegrade (b) from a venous catheter through the cavoatrial (SVC-RA) junction also

Figure 7: Access to the right upper pulmonary vein is obtained retrograde (a) from an arterial catheter passed from the aorta through the left ventricle and left atrium. It can be obtained antegrade (b) from a venous catheter through the cavoatrial (SVC-RA) junction also